BU4822G-TR Integrated Circuits (ICs)

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Simple Reset/Power-On Reset
Number of Voltages Monitored:	1
Output:	Open Drain or Open Collector
Reset:	Active High/Active Low
Reset Timeout:	--
Voltage - Threshold:	2.2V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	5-SSOP
Base Part Number:	BU48*

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Datasheets are important resources when making decisions on which components to use in an application. The BU4822G-TR offers designers an easy-to-use, silicon-on-insulator (SOI) voltage supervisor IC that features a low power stand-by mode, Schmitt-trigger input, and watchdog function, making it an ideal solution for applications requiring precise power supply and voltage regulation.This article describes the application field and working principle of the BU4822G-TR, allowing designers to make informed decisions on which IC to use for their application.

Application Field of BU4822G-TR

The BU4822G-TR is a logical voltage supervising IC with a linear, precise operating current of 1.75 µA, making it ideal for low power applications. With a quiescent current of 0.15 mA, the BU4822G-TR is highly suitable for applications that require a low power stand-by mode. Additionally, the IC\'s Schmitt-trigger input provides higher immunity to noise signals, allowing for a broader application range.Due to its unique design, the BU4822G-TR can be used for a variety of applications, including digital circuits, microprocessor systems, computer systems, and battery-powered products. Depending on how it is used, the BU4822G-TR can monitor the power supply voltage, protect digital systems from unexpected power-off or power-up conditions, as well as monitor digital signals and generate a reset signal each time a certain condition is met.The BU4822G-TR also includes a built-in watchdog circuit that can generate a reset signal when a predetermined period of time has elapsed. By setting the time interval, the watchdog can be used to detect system anomalies such as software bugs, dark currents, or other unexpected behaviors.

Working Principle of BU4822G-TR

The BU4822G-TR is built on a Silicon-on-insulator (SOI) technology, providing high performance and reliability. The IC is designed with an input pin (IN), a monitor pin (MON), and an output pin (OUT). The input pin is connected to the voltage source, while the monitor pin is connected to the output pin and actuates the reset signal.When the voltage at the input pin exceeds the voltage level set by an external reference, the IC monitors the voltage level at the monitor pin. If the voltage is higher than the reference voltage for a certain length of time, the IC sends a reset signal to the output pin. The reset signal can then be used to reset the system.The BU4822G-TR also has an internal watchdog timer that can be programmed to generate a reset signal if the voltage on the input pin remains high for a certain amount of time. The duration of the watchdog timer can be adjusted by external capacitors, allowing designers flexibility when configuring the IC\'s operation.

Conclusion

When designing applications requiring low power consumption and reliable voltage regulation, the BU4822G-TR is a great choice. The IC\'s SOI technology ensures high performance and stability, while its Schmitt-trigger input and watchdog function make it ideal for a wide range of applications. By understanding the BU4822G-TR\'s application field and working principle, designers can make well-informed decisions on which IC to use for their application.

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